Vecow MTC-1000 User Manual page 15

2.2.6 Series Port
Serial port can be configured for RS-232, RS-422, or RS-485 with auto flow
control communication. The default definition is RS-232, but if you want to
change to RS-422 or RS-485, you can find the settings in BIOS.
BIOS Setting
COM 1
COM 2
The pin assignments are listed in the following table :
Serial
Port
1, 2
©Vecow MTC-1000 User Manual
Pin No. RS-232
1 DCD
2 RXD
3 TXD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RT
10 DCD
Function
RS-232
RS-422 (5-wire)
RS-422 (9-wire)
RS-485
RS-485 w/z auto-flow control
MDI1_N
MDI3_P
MDI1_N
RS-422 RS-422
(5-wire) (9-wire)
TXD- TXD-
TXD+ TXD+
RXD+ RXD+
RXD- RXD-
GND GND
----------- RTS-
----------- RTS+
----------- CTS+
----------- CTS-
TXD- TXD-
GETTING TO KNOW YOUR MTC-1000
RS-485
(3-wire)
DATA-
DATA+
-----------
-----------
GND
-----------
-----------
-----------
-----------
DATA-
9